User's Manual

10 Document Number: 0100SM1401 Issue: 10-14
Full Duplex Hot Standby Base Radio
QH450 - Hot Standby Full Duplex Radio
Complimenting the QR450 half duplex remote radio, the QH450 full duplex radio kit is ideal for deployment at base & repeater
sites in systems using two frequency operation. In high duty cycle applications, the QH450 delivers maximum rated transmitter
power in ambient temperatures up to +70°C (158°F). Where 1+1 hot standby redundancy is not required,
the full duplex QB450 base/repeater station is available.
The features of the QH450 include:
•Full Duplex operation (100% duty cycle)
•Ethernet link monitoring and shared IP address
provides smart Ethernet redundancy
•Remote monitoring, control and changeover of
duplicated base/repeater stations
•Hot swappable modular 19” rack mount
transceiver configuration (3 RU total)
•Automatic change over upon alarm detection of
transmitter, receiver, data alarm detection, power
supply and data connectivity.
•Digital Inputs & Outputs
•Multiple power supply options:
• 11-30 V DC
• -48 V DC
• 110/240 V AC
•Hot Standby Controller power supply
• 11-14V DC (from output of QBs)
• Max Current: 800mA
Part B – Feature Overview